CN108178957B - Baking-free glaze-imitating coating and preparation method and application thereof - Google Patents
Baking-free glaze-imitating coating and preparation method and application thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses a baking-free glaze-imitating coating as well as a preparation method and application thereof, wherein the baking-free glaze-imitating coating comprises the following components in parts by weight: 28-35 parts of organic silicon modified acrylic resin, 26-32 parts of polyurethane modified organic silicon resin, 3-5 parts of silane coupling agent, 3-30 parts of nano pigment, 6-10 parts of functional auxiliary agent and 10-20 parts of mixed solvent. The glaze-like coating can form a glaze-like effect without calcination, can ensure the ultrahigh strength, high scratch resistance and high wear resistance of the coating, and has excellent outdoor weather resistance. The coating can be directly matched with epoxy anti-rust primer, electrophoretic primer, powder coating, acrylic paint and other anti-rust paint or various primer coats to form complete coating, and can be applied to outdoor infrastructures needing high hardness and high weather resistance requirements, such as flower pots, flower stands, chairs, animal sculptures and the like, on two sides of urban roads, such as telegraph poles, guard rails, light poles, traffic signal lamps, power distribution cabinets, garbage cans and the like.
Description
Technical Field
The invention relates to the technical field of enamel coatings, and particularly discloses a baking-free glaze imitation coating as well as a preparation method and application thereof.
Background
The glaze applied on the ceramic ware is generally made of quartz, feldspar and clay as raw materials, and is ground, mixed with water, coated on the surface of the body, roasted at a certain temperature to melt, and when the temperature is reduced, the vitreous thin layer on the surface of the ceramic ware is formed. It can increase the mechanical strength, thermal stability, dielectric strength and prevent the erosion of liquid and gas. The glaze also has the functions of improving the appearance of the porcelain, facilitating cleaning, preventing from being stained by dust, and the like. The daily-used ceramic ware generally wears smooth clothes, particularly daily-used ceramic ware, and the clothes are more exquisite, clean and white as jade, colorful and beautiful. This kind of clothes, named "glaze", for ceramics. The ceramic glaze is classified according to the preparation method, and comprises raw glaze and fritted glaze; the glaze is classified according to the components of the glaze, such as lime glaze, feldspar glaze, lead glaze, boron glaze, molten salt glaze, earth glaze and the like; the ceramic glaze is classified according to the type of the blank body and comprises hard ceramic glaze, soft ceramic glaze and ceramic glaze; classified according to firing temperature, including fusible glaze (below 1100 ℃), medium-temperature glaze (1100-1250 ℃) and high-temperature glaze (above 1250 ℃); the glaze surface is classified according to its appearance, and includes transparent glaze, opaque glaze, crackle glaze, etc. The first two categories of methods are commonly used in production, which directly reflect the preparation method and performance of the glaze.
The glazing process is one of ancient ceramic ware manufacturing process technologies, and is to apply glaze slip on the surface of a formed ceramic body. The glazing method mainly comprises six methods of dipping glaze, swinging glaze, pouring glaze, brushing glaze, spraying glaze, rolling glaze and the like, and adopts a corresponding glazing method according to different shapes and thicknesses of blanks. Because the glazing process is one of the ancient ceramic porcelain manufacturing process technologies, the glazing process is complex, and basically requires high-temperature calcination, so that the environment pollution is caused, and the process is troublesome and consumes a large amount of energy.
In recent years, glaze-like paints have been intensively studied. Patent CN104231816A discloses an enamel-like coating and a preparation method thereof, which comprises the following components in parts by weight: the glaze-imitating coating comprises, by weight, 500-600 parts of polymer emulsion and 50-150 parts of nano zirconia, solves the problem of single characteristic of the conventional coating, is remarkably improved in scratch resistance, high temperature resistance and aging resistance, has an excellent appearance glaze-imitating effect, and improves the grade of a coated product. Patent CN105176284A discloses a water-based glaze-imitating coating and a preparation method thereof, wherein the water-based glaze-imitating coating comprises the following materials in parts by weight: 90 parts of butyl acrylate, 45 parts of methyl methacrylate, 1.3 parts of ammonium persulfate, 2.2 parts of polyethylene glycol octyl phenyl ether, 1.1 parts of acrylic acid-methacrylic acid copolymer ammonium salt and 210 parts of water. The material and the weight ratio of the material component B are respectively as follows: 80 parts of water emulsion type film forming matter, 7.5 parts of rutile type titanium dioxide, 0.8 part of sodium hexametaphosphate, 6.2 parts of ethylene glycol monobutyl ether and 61 parts of water. The water-based glaze-imitating coating is suitable for decorating inner and outer walls and roof tiles of buildings, has the characteristics of smooth and level surface, high glossiness and strong adhesive force, has the positive effects of water resistance, aging resistance, acid and alkali resistance, washing resistance, strong stain resistance and the like, and can resist high temperature of more than 100 ℃; the cost is low. Patent CN 106905794A discloses a non-toxic glaze-imitating paint formula, which comprises the following raw materials: polycarboxylic acid betaines: 25-30 parts; propane sulfonic acid: 3-5 parts; white carbon black: 5-10 parts; sodium hydroxide: 0.8-1.2 parts; fluorescent whitening agent: 0.7-1 part; deionized water: 500-600 parts; light calcium carbonate: 40-50 parts; ash calcium powder: 250-280 parts; mildew preventive: 0.08-0.12 part; synthesis of resin emulsion: 10-15 parts; preservative: 0.8-1.2 parts; stain resistant agent: 0.5-1.5 parts; talc powder: 38-45 parts; formaldehyde: 15-20 parts of a solvent; viscosity stabilizer: 0.5-1 part; the above parts are all parts by mass. The non-toxic glaze-imitating paint has scrubbing resistance, low cost and capacity of maintaining the smooth and bright wall surface. However, the above-mentioned patent technology products are not particularly focused and studied in terms of weather resistance and cleanability.
Disclosure of Invention
The invention aims to provide a baking-free glaze-imitating coating which can form a glaze-like effect without calcination, can ensure the ultrahigh strength, high scratch resistance and high wear resistance of a coating, and has excellent outdoor weather resistance.
The invention also aims to provide a preparation method of the baking-free glaze-imitating coating, which has simple preparation process, is easy for large-scale industrial production and has excellent comprehensive performance of the obtained coating.
The invention further aims to provide application of the baking-free glaze imitation coating in outdoor infrastructure and outdoor artware.
The invention provides a baking-free glaze-imitating coating which comprises the following components in parts by weight: 28-35 parts of organic silicon modified acrylic resin, 26-32 parts of polyurethane modified organic silicon resin, 3-5 parts of silane coupling agent, 3-30 parts of nano pigment, 6-10 parts of functional auxiliary agent and 10-20 parts of mixed solvent.
Preferably, the organic silicon modified acrylic resin is a modified resin prepared by reacting a polyacrylic phenol resin containing active groups with an organic silicon oligomer containing active antelope groups (or alkoxy groups), and is preferably FJNS-4 organic silicon modified acrylic resin of Changzhou type Carnoorganic silicon company Limited. The modified acrylic resin is synthesized by grafting a modifier containing phenyl triethoxy silane and octamethylcyclotetrasiloxane with an acrylic monomer or an intermediate under the action of a catalyst, so that the organosilicon modified acrylic resin generates a three-dimensional network cross-linking structure, the weather resistance, the high and low temperature resistance, the water resistance, the gloss retention, the durability and the like of a coating can be obviously improved, and meanwhile, the coating can be dried at room temperature in a single component. The resin plays a role of a film forming matter in a product system.
Preferably, the polyurethane modified silicone resin is self-drying polyurethane modified silicone resin, and preferably polyurethane modified silicone resin SJ-5021 from Sanjin pigment Limited company in Xianyang county. The high-hardness organic silicon polyurethane film is synthesized by performing ester exchange reaction on alkoxy in polysiloxane molecules and partial hydroxyl in a polyurethane prepolymer by using an advanced synthesis process, so that the adhesion, wear resistance, oil resistance and chemical resistance of organic silicon are obviously improved, the excellent weather resistance and mechanical property of polyurethane are maintained, a highly crosslinked net structure is formed, the molecules contain active groups, urea bonds are generated by reaction of-NCO in the prepolymer and moisture in air, and the urea bonds are crosslinked, cured, dried and formed into a film at normal temperature, and the ultrahigh hardness of the film can be ensured. The resin has the double effects of modifying and hardening and promoting adhesion in a product system.
Silane coupling agents are a class of organosilicon compounds that contain two different chemical groups in the molecule. In the formula, the silane coupling agent can be used as a crosslinking agent, improves the crosslinking property of resin, improves the adhesive force and water-resistant flexibility of the resin, can obviously improve the adhesive force and the adhesion property of glass ink coating, can improve the adhesive force of acrylic latex, sealant, polyurethane and epoxy resin, improves the flexibility, the water resistance, the wear resistance, the scrub resistance, the scratch resistance, the chemical resistance and the like of a coating, and preferably selects the silane coupling agent Z-6040 of Dow Corning company of America.
Preferably, the nano pigment is nano alumina, nano titanium dioxide, nano organic medium yellow or nano organic scarlet, and the corresponding weight parts of the nano pigment are 3-5 parts of nano alumina, 26-30 parts of nano titanium dioxide, 12-16 parts of nano organic medium yellow or 12-16 parts of nano organic scarlet. Wherein, the nano alumina is added to form the high-hardness transparent ceramic-proof wear-resistant varnish, the nano titanium dioxide is added to form the white baking-free glaze imitation coating, the nano organic mesochrome is added to form the yellow baking-free glaze imitation coating, and the nano organic scarlet is added to form the red baking-free glaze imitation coating.
Preferably, the functional auxiliary agent comprises one or more of a defoaming agent, a flatting agent, a dispersing agent, an anti-fouling auxiliary agent and an ultraviolet-resistant auxiliary agent.
Preferably, the defoaming agent is a German Digao 810 defoaming agent, and the defoaming agent is a polyether siloxane defoaming agent. The leveling agent isThe Fuka EFKA-3700 leveling agent is a polyacrylate leveling agent with high fluorocarbon content, has very strong surface tension reduction effect, excellent shrinkage resistance effect, good substrate wetting effect and capability of promoting vertical plane leveling. The dispersant is 650U British dispersant, which is an acrylic dispersant capable of dispersing organic and inorganic pigments. The anti-fouling auxiliary agent is
3700; the ultraviolet resistance auxiliary agent is a basf 1130 ultraviolet light absorbent and an antioxidant 292, the 1130 is a hydroxybenzotriazole liquid ultraviolet light absorbent, the 292 is a liquid hindered amine light stabilizer, and the two are compounded for use, so that the coating has a very good ultraviolet resistance effect.
Preferably, the mixed solvent is selected from a mixture of a plurality of water-soluble alcohol solvents and water-soluble ether solvents. The water-soluble alcohol solvent is n-butanol, isobutanol, ethanol and the like; the water-soluble ether solvent can be dipropylene glycol dimethyl ether, diethylene glycol butyl ether, dipropylene glycol butyl ether and the like. The selected solvent is a water-soluble solvent which can be dissolved in water, and the solvent is more environment-friendly than organic solvents such as benzene, toluene and xylene, has no toxic action on human bodies, does not cause pollution to the environment and has very high environmental protection property.
Preferably, the mixed solvent is a mixture of n-butanol and dipropylene glycol dimethyl ether, and the mass ratio is 1: 1-1.2. The n-butyl alcohol plays a role of a stabilizer in the coating, prevents the coating from being gelled, prolongs the storage time of the coating, and the dipropylene glycol dimethyl ether plays a role in dissolving and adjusting the drying time of the paint, reducing the surface tension and helping to form a film.
The invention also provides a preparation method of the baking-free glaze-imitating coating, when the added nano pigment does not need to be ground, the steps are as follows: mixing organic silicon modified acrylic resin, polyurethane modified organic silicon resin, nano pigment, silane coupling agent, part of mixed solvent and functional auxiliary agent, stirring uniformly, finally adjusting viscosity by using the rest mixed solvent, and filtering; when the added nano pigment needs to be ground, the steps are as follows: mixing the organic silicon modified acrylic resin, the polyurethane modified organic silicon resin, the nano pigment, the silane coupling agent, part of mixed solvent and the functional auxiliary agent, stirring uniformly, transferring to a grinding process, grinding and dispersing by using a sand mill until the fineness meets the requirement, finally adjusting the viscosity by using the residual mixed solvent, and filtering.
The baking-free glaze-imitating paint is naturally dried by utilizing moisture curing to form a film with ultrahigh hardness, the main principle of the moisture curing is that a main film forming matter in the product, namely-NCO in a prepolymer, has high reaction activity, can react with moisture in the air to generate urea bonds, is crosslinked, cured and dried at normal temperature to form a film, and the product is dried at proper temperature and humidity. The temperature is 25-27 deg.C, and the humidity is 75-80%. If necessary, water is sprayed or sprinkled on the ground to increase indoor humidity, thereby promoting the moisture curing and drying of the coating film. The process has low cost, low energy consumption and simple operation, does not need high-temperature calcination and high-temperature baking, belongs to a high-energy-saving and high-environment-friendly product, and is suitable for industrial production.
The invention provides application of the baking-free glaze-imitating coating in outdoor infrastructure and outdoor artware.
The baking-free glaze-imitating coating can be directly matched with epoxy anti-rust primer, electrophoretic primer, powder coating, acrylic paint and other anti-rust paint or various primer coats to form complete coating, and can be applied to outdoor infrastructures needing high-hardness and high-weather-resistance requirements, such as flower pots, flower stands, chairs, animal sculptures and the like, on two sides of urban roads, such as telegraph poles, guard rails, street lamp poles, traffic signal lamps, power distribution cabinets, garbage cans and the like.
The invention has the following beneficial effects:
1. the baking-free glaze-imitating coating has simple construction process, can form similar glaze effect after being cured without calcining moisture and naturally dried for 48 hours, and greatly reduces energy consumption for sintering glaze; meanwhile, the coating is simple in preparation method, low in cost, simple in construction mode and high in utilization rate, waste is avoided, and production and construction cost is saved.
2. The glaze-like coating is formed by compounding and refining the organic silicon modified acrylic resin and the self-drying type polyurethane modified organic silicon resin, a paint film is formed after moisture curing and natural drying, and the film-forming coating comprises the following components: a. the hardness is high, and the surface hardness of the coating can reach 9H (Mitsubishi pencil) after the coating is cured into a film; b. the coating is resistant to high and low temperatures, can resist high temperature above 500 ℃ and low temperature below 40 ℃ below zero, and is not embrittled; c. the high wear resistance has ultrahigh wear resistance, and the wear resistance can be comparable to that of ceramics; d. the adhesive force is good, and the adhesive force on various substrates can reach 0 grade; e. the weather resistance is excellent, the coating is particularly suitable for outdoor substrates with waterproof, moistureproof and ultraviolet-resistant requirements, and the coating is not aged after being normally used for 30 years.
3. Can maintain the low surface energy of the coating film characteristic for a long time, and has excellent oleophobic and hydrophobic properties and anti-graffiti easy-cleaning performance.
4. The selected solvent is a water-soluble solvent which can be dissolved in water, and the solvent is more environment-friendly than organic solvents such as benzene, toluene and xylene, has no toxic action on human bodies, does not cause pollution to the environment and has very high environmental protection property.
Detailed Description
The present invention will be further clearly understood from the specific examples and comparative examples of the present invention given below, which are not intended to limit the present invention. The parts of the specific examples and comparative examples which are not described in detail are obtained by means of the prior art, the known technical means and the industry standard.
Unless otherwise indicated, the techniques employed in the examples are conventional and well known to those skilled in the art, and the reagents and products employed are also commercially available. The source and trade names of the reagents used are indicated for the first time, with the necessary listing of the components.
All percentages used in the present invention are by weight unless otherwise indicated.
The main test methods or instruments useful in the embodiments of the invention are as follows:
and (3) measuring the thickness of a coating film: the thickness meter (film thickness meter) is suitable for measuring the thickness of base materials of iron metals such as aluminum, copper, magnesium, zinc, iron and the like and nonferrous metal parts, and the PositeDetector 200 nonmetal digital display thickness meter is suitable for measuring the thickness of the base materials such as plastic base materials, wood, concrete, magnesium oxide and the like.
Pencil hardness: a combined pencil durometer of guangzhou gaogada laboratory instruments ltd.
Adhesion force: paint film scriber (hundred grid knife) from Guangzhou Dada laboratory instruments, Inc.
Moisture and heat resistance: taiwan Zhongzhi CZ-A-150D programmable constant temperature and humidity tester sets temperature and humidity and sets test time 800h damp-heat resistant test condition for testing.
Gloss: the intelligent three-angle gloss meter BGD516 of Guangzhou Daogda laboratory instruments ltd performs precision testing.
Color difference: the precision test was performed by a CI6X spectrophotometer, Achrome (Atai) Inc., USA.
Salt spray resistance: a BGD 881 continuous salt spray corrosion tester of Guangzhou Daogda laboratory instruments and appliances, Inc sets temperature and humidity and sets test time 800h salt spray resistance test conditions for testing.
Resistance to artificial weather aging: a Q-SUN-XE-3 type light stability test box produced by the American Q-LAB company is provided with a light wave of 340nm, an irradiance of 0.51W/m2, an illumination temperature of 63 ℃ and a humidity of 80% to carry out a continuous artificial climate aging resistance test for 1200h, and then an intelligent three-angle gloss meter BGD516 of Guangzhou Daogeda laboratory instruments ltd and a CI6X spectrophotometer of the American Airy (Atai) Limited company are used for carrying out gloss and color difference change tests.
Example 1
The baking-free glaze-imitating transparent varnish comprises the following components in parts by weight: 32.5 parts of organic silicon modified acrylic resin, 32 parts of polyurethane modified organic silicon resin, 4.5 parts of silane coupling agent, 5.0 parts of nano-alumina, 9.5 parts of functional auxiliary agent and 16.5 parts of mixed solvent (n-butyl alcohol: dipropylene glycol dimethyl ether: 1).
The production method comprises the following steps:
organic silicon modified acrylic resin, polyurethane modified organic silicon resin, a mixed solvent, a silane coupling agent, a dispersing agent and a defoaming agent are added into a paint preparation tank, nano aluminum oxide is uniformly stirred by a stirrer, the rotating speed of the stirrer is 1000 revolutions per minute, the flatting agent, the anti-fouling assistant and the anti-ultraviolet assistant in the functional assistant are sequentially added after the nano aluminum oxide is completely uniformly stirred, the stirring is uniformly performed again, the rotating speed of the stirrer is 800 revolutions per minute, the viscosity is adjusted to be 25 +/-22S (25 ℃) when a 4# cup is coated by the mixed solvent, and the nano aluminum oxide is filtered by a 200-mesh filter screen and packaged after the nano aluminum oxide is.
The construction method comprises the following steps:
spraying or roll-coating baking-free glaze-imitating coating: and opening the packaging barrel, uniformly stirring, and performing construction by adopting air spraying, roller coating or brush coating.
Example 2
The baking-free glaze-imitating white paint comprises the following components in parts by weight: 28.3 parts of organic silicon modified acrylic resin, 26 parts of polyurethane modified organic silicon resin, 4.0 parts of silane coupling agent, 2.0 parts of nano-alumina, 26 parts of nano-titanium dioxide, 8.5 parts of functional additive and 15.9 parts of mixed solvent (n-butyl alcohol, dipropylene glycol dimethyl ether and 1: 1).
The production method comprises the following steps:
adding the upper half part of organic silicon modified acrylic resin, polyurethane modified organic silicon resin, a mixed solvent, a silane coupling agent, a dispersing agent, a defoaming agent, nano aluminum oxide and nano titanium dioxide into a paint preparation tank, uniformly stirring by using a stirrer at the rotating speed of 1000 revolutions per minute until the materials are completely uniform, grinding the materials by using a large-flow high-efficiency sand mill until the fineness of the materials is less than or equal to 20 microns, then sequentially adding the lower half part of the synthesized organic silicon modified acrylic resin, the polyurethane modified organic silicon resin, a flatting agent, an anti-fouling assistant and an anti-ultraviolet assistant in the functional assistant, uniformly stirring again at the rotating speed of 800 revolutions per minute, adjusting the viscosity to be 22 +/-2S (25 ℃) of a 4# cup by using the mixed solvent, filtering by using a 200-mesh filter screen and packaging after.
Example 3
The baking-free glaze-imitating yellow paint comprises the following components in parts by weight: 29.2 parts of organic silicon modified acrylic resin, 26 parts of polyurethane modified organic silicon resin, 4.0 parts of silane coupling agent, 2.2 parts of nano alumina, 12 parts of nano organic mesogen-seng powder, 8.5 parts of functional additive and 14.3 parts of mixed solvent (n-butyl alcohol: dipropylene glycol dimethyl ether: 1).
The production method comprises the following steps:
adding organic silicon modified acrylic resin, polyurethane modified organic silicon resin, a mixed solvent, a silane coupling agent, a defoaming agent, a dispersing agent, nano aluminum oxide and nano organic mesochrome powder into a paint preparation tank, uniformly stirring by using a stirrer at the rotation speed of 1000 revolutions per minute until the materials are completely uniform, grinding by using a large-flow high-efficiency sand mill until the fineness is less than or equal to 20 mu m, transferring into the paint preparation tank, adding the leveling agent, the anti-fouling assistant and the anti-ultraviolet assistant in the organic silicon modified acrylic resin, the polyurethane modified organic silicon resin and the functional assistant into the paint preparation tank in sequence, uniformly stirring again at the rotation speed of 800 revolutions per minute, adjusting the viscosity to be 22 +/-2S (25 ℃) of a 4# cup by using the mixed solvent, filtering by using a 200-mesh filter screen and packaging after the materials are qualified.
Comparative example 1
The common ceramic baking varnish comprises the following components in parts by weight: 33 parts of thermosetting acrylic resin, 13 parts of mixed solvent (n-butyl alcohol: xylene: 1), 1 part of wetting dispersant, 0.3 part of defoaming agent, 20 parts of iron oxide red powder, 11 parts of filler, 0.4 part of anti-settling agent, 14 parts of amino resin (582-2), 6 parts of saturated polyester resin, 0.4 part of flatting agent and 0.4 part of ultraviolet-resistant auxiliary agent.
The production method comprises the following steps:
after thermosetting acrylic resin, a mixed solvent, an anti-settling agent, a wetting dispersant, a defoaming agent, rutile titanium dioxide and a filler are put into a paint preparation tank, the mixture is uniformly stirred by a stirrer at the rotation speed of 1000 revolutions per minute until the mixture is completely uniform, the mixture is ground until the fineness is less than or equal to 20 microns, the mixture is transferred into the paint preparation tank after the grinding fineness is qualified, amino resin, saturated polyester resin, a leveling agent, an ultraviolet-resistant auxiliary agent and a cooling agent are added, the mixture is uniformly stirred again at the rotation speed of 800 revolutions per minute, the viscosity is adjusted to be 22 +/-2S (25 ℃) of a 4# cup by the mixed solvent, and the mixture is filtered and packaged by a 200-mesh filter screen after the mixture is qualified.
The baking-free glaze imitation coatings of the above examples and comparative examples were tested, and the performance test results are shown in table 1 below.
TABLE 1 test results of properties of non-fired glaze-imitating coating
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (7)
1. A baking-free glaze-imitating coating is characterized in that: comprises the following components in parts by weight: 28-35 parts of organic silicon modified acrylic resin, 26-32 parts of polyurethane modified organic silicon resin, 3-5 parts of silane coupling agent, 3-30 parts of nano pigment, 6-10 parts of functional auxiliary agent and 10-20 parts of mixed solvent;
the polyurethane modified organic silicon resin is self-drying polyurethane modified organic silicon resin, is synthesized by carrying out ester exchange reaction on alkoxy in a polyorganosiloxane molecule and partial hydroxyl in a polyurethane prepolymer, and is subjected to urea bond normal-temperature crosslinking curing and film forming by reacting-NCO in the prepolymer with moisture in the air;
wherein the mixed solvent is selected from a mixture of a plurality of water-soluble alcohol solvents and water-soluble ether solvents, and the water-soluble alcohol solvents are n-butanol, isobutanol and ethanol; the water-soluble ether solvent is dipropylene glycol dimethyl ether, diethylene glycol butyl ether and dipropylene glycol butyl ether;
wherein, the silane coupling agent is used as a cross-linking agent to improve the cross-linking property of the resin.
2. The baking-free glaze-imitating coating material according to claim 1, wherein: the organosilicon modified acrylic resin is synthesized by grafting a modifier containing phenyl triethoxy silane and octamethylcyclotetrasiloxane with an acrylic monomer or an intermediate under the action of a catalyst.
3. The baking-free glaze-imitating coating material according to claim 1, wherein: the nano pigment is nano alumina, nano titanium dioxide, nano organic medium yellow or nano organic scarlet, and the corresponding weight proportions are 3-5 parts of nano alumina, 26-30 parts of nano titanium dioxide, 12-16 parts of nano organic medium yellow or 12-16 parts of nano organic scarlet.
4. The baking-free glaze-imitating coating material according to claim 1, wherein: the functional auxiliary agent comprises one or more of a defoaming agent, a flatting agent, a dispersing agent, an anti-fouling auxiliary agent and an anti-ultraviolet auxiliary agent.
5. The baking-free glaze imitation coating of claim 4, wherein: the defoaming agent is a German Digao 810 defoaming agent, the leveling agent is an Effka EFKA-3700 leveling agent, the dispersing agent is a British 650U dispersing agent, and the anti-fouling auxiliary agent is
SILCLEAN 3700, said anti-UV adjuvant being a Basff 1130 UV absorber formulated with an antioxidant 292.
6. A preparation method of the baking-free glaze imitation coating of any one of claims 1 to 5, which is characterized by comprising the following steps: when the added nano pigment does not need to be ground, the method comprises the following steps: mixing organic silicon modified acrylic resin, polyurethane modified organic silicon resin, nano pigment, silane coupling agent, part of mixed solvent and functional auxiliary agent, stirring uniformly, finally adjusting viscosity by using the rest mixed solvent, and filtering;
when the added nano pigment needs to be ground, the steps are as follows: mixing the organic silicon modified acrylic resin, the polyurethane modified organic silicon resin, the nano pigment, the silane coupling agent, part of mixed solvent and the functional auxiliary agent, stirring uniformly, transferring to a grinding process, grinding and dispersing by using a sand mill until the fineness meets the requirement, finally adjusting the viscosity by using the residual mixed solvent, and filtering.
7. Use of the baking-free imitation glaze coating of any one of claims 1 to 6 in outdoor infrastructure and outdoor artwork.
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| CN109897483A (en) * | 2019-01-16 | 2019-06-18 | 深圳市欧科力科技有限公司 | A kind of preparation method of the modified acrylic coating material of resistance to UV aging energy |
| CN110723987A (en) * | 2019-10-17 | 2020-01-24 | 南京博物院 | Application of XW-HB water-based two-component self-drying paint as porcelain repairing glaze-imitating material |
| CN111393025A (en) * | 2020-03-30 | 2020-07-10 | 景德镇陶瓷大学 | Ceramic glaze material with antibacterial effect and ceramic |
| CN111484354A (en) * | 2020-06-05 | 2020-08-04 | 嘉应学院 | High-hardness long-afterglow luminescent coating for enamel ceramic product and preparation method thereof |
| CN113024282B (en) * | 2021-03-05 | 2022-05-31 | 德化县嘉吉陶瓷有限公司 | High-strength crack glaze, high-strength crack glaze ceramic product and preparation method thereof |
| CN113956077B (en) * | 2021-11-26 | 2023-03-10 | 佛山市东鹏陶瓷发展有限公司 | Decorative ceramic tile using baking-free glaze and manufacturing process thereof |
| CN116161987B (en) * | 2023-04-21 | 2024-01-05 | 佛山市东鹏陶瓷有限公司 | Composite decorative porcelain product and preparation method thereof |
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| CN102464784A (en) * | 2010-11-19 | 2012-05-23 | 北京佳盛世纪科技有限公司 | Synthesis method of organic silicon modified acrylate copolymer |
| CN103012714B (en) * | 2012-12-26 | 2014-07-09 | 江苏柏鹤涂料有限公司 | High-flexibility aqueous acrylic acid polyurethane elastic resin and coating thereof |
| CN105176284A (en) * | 2015-09-14 | 2015-12-23 | 黄建丽 | Water-based glaze-imitation paint and preparing method thereof |
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